contrib/tcpdump/print-bt.c

   1 /*
   2  * Copyright (c) 2007
   3  *      paolo.abeni@email.it  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that: (1) source code distributions
   7  * retain the above copyright notice and this paragraph in its entirety, (2)
   8  * distributions including binary code include the above copyright notice and
   9  * this paragraph in its entirety in the documentation or other materials
  10  * provided with the distribution, and (3) all advertising materials mentioning
  11  * features or use of this software display the following acknowledgement:
  12  * ``This product includes software developed by Paolo Abeni.''
  13  * The name of author may not be used to endorse or promote products derived
  14  * from this software without specific prior written permission.
  15  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  16  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  17  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  18  */
  19
  20 /* \summary: Bluetooth printer */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include <netdissect-stdinc.h>
  27
  28 #include "netdissect.h"
  29 #include "extract.h"
  30
  31 #if defined(DLT_BLUETOOTH_HCI_H4_WITH_PHDR) && defined(HAVE_PCAP_BLUETOOTH_H)
  32 #include <pcap/bluetooth.h>
  33
  34 #define BT_HDRLEN sizeof(pcap_bluetooth_h4_header)
  35 /*
  36  * This is the top level routine of the printer.  'p' points
  37  * to the bluetooth header of the packet, 'h->ts' is the timestamp,
  38  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  39  * is the number of bytes actually captured.
  40  */
  41 u_int
  42 bt_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
  43 {
  44         u_int length = h->len;
  45         u_int caplen = h->caplen;
  46         const pcap_bluetooth_h4_header* hdr = (const pcap_bluetooth_h4_header*)p;
  47
  48         if (caplen < BT_HDRLEN) {
  49                 ND_PRINT((ndo, "[|bt]"));
  50                 return (BT_HDRLEN);
  51         }
  52         caplen -= BT_HDRLEN;
  53         length -= BT_HDRLEN;
  54         p += BT_HDRLEN;
  55         if (ndo->ndo_eflag)
  56                 ND_PRINT((ndo, "hci length %d, direction %s, ", length, (EXTRACT_32BITS(&hdr->direction)&0x1)?"in":"out"));
  57
  58         if (!ndo->ndo_suppress_default_print)
  59                 ND_DEFAULTPRINT(p, caplen);
  60
  61         return (BT_HDRLEN);
  62 }
  63 #endif
  64
  65
  66 /*
  67  * Local Variables:
  68  * c-style: whitesmith
  69  * c-basic-offset: 8
  70  * End:
  71  */